Deref returns the basic type of t.

Indirect deref all level pointer references.

IndirectNew returns the indirect value of v this function is safe and WILL NOT trigger panic.

IsZero check if input v is zero.

New a `reflect.Value` with reflect.Type not like reflect.New, but new all level pointer ref.

NewElem new the indirect type of t.

ParseStructTag parse struct tag to tag key/value map eg: `tagKey:"tagName,tagFlag1,tagFlag2=v"` will parsed to map[string]string{"cmd": "tagName,tagFlag1,tagFlag2=v"}.

ParseTagValue parse tag value to name and flags eg: "tagName,tagFlag1,tagFlag2=v" will be parsed to name: tagName, flags: map[string]{"tagFlag1", "tagFlag2=v"}.

Typename returns the full type name of rt.